JP2015115987A - Renewable energy conveyance reproduction method - Google Patents

Renewable energy conveyance reproduction method Download PDF

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JP2015115987A
JP2015115987A JP2013254290A JP2013254290A JP2015115987A JP 2015115987 A JP2015115987 A JP 2015115987A JP 2013254290 A JP2013254290 A JP 2013254290A JP 2013254290 A JP2013254290 A JP 2013254290A JP 2015115987 A JP2015115987 A JP 2015115987A
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storage battery
cathode
step
container
point
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JP6496479B2 (en
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剛治 國生
Koji Kokusho
剛治 國生
永二 江本
Eiji Emoto
永二 江本
護 金川
Mamoru Kanekawa
護 金川
隆志 世古
Takashi Seko
隆志 世古
堅一 内藤
Kenichi Naito
堅一 内藤
愛人 中尾
Yoshito Nakao
愛人 中尾
知幸 林
Tomoyuki Hayashi
知幸 林
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学校法人 中央大学
Chuo Univ
学校法人 中央大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation
    • Y02E60/128Hybrid cells composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type

Abstract

PROBLEM TO BE SOLVED: To make it possible to transport produced energy in a state where loss of the produced power is suppressed, in retrieving energy by using renewable energy.SOLUTION: A renewable energy reproduction method including a power supply unit which is arranged on a floating body floating on the water and outputs DC power generated using renewable energy includes: a charger process of charging a storage battery accommodating an electrolytic solution including metal ions, a positive electrode, and at least one negative electrode with DC power supplied from the power supply unit to make the metal ions be deposited on the negative electrode; a separation process of separating the negative electrode from the storage battery after being charged; an accommodation process of accommodating the negative electrode separated by the separation process into a container; a transport process of transporting the container accommodating the negative electrode from a first location to a second location differing from the first location; and a reproduction process of reproducing a storage battery by installing the negative electrode taken out from the container into a storage battery container including another positive electrode differing from the positive electrode after transporting to the second location.

Description

  The present invention relates to a renewable energy transport and regeneration method suitable for regeneration after transporting renewable energy such as sunlight, wind power, and tide level difference.

Due to various activities of human beings using fossil fuels in the short period of time in the past 100 years or so, the concentration of carbon dioxide (CO 2 : greenhouse gas) in the atmosphere is rapidly increasing. As a result, phenomena such as frequent occurrence of abnormal weather and sea level rise due to melting of glaciers have been realized. On the other hand, many scientists suggest that some measures should be taken on a global scale in anticipation of changes in the environment if this state is left unattended. In other words, it is a break from the society using fossil fuels, and a shift to clean alternative energy to replace fossil fuel energy is screamed.
Therefore, the use of a power generation system using renewable energy on a global scale is eagerly desired.
Conventionally, many power generation systems using renewable energy have been put into practical use, but in Japan, they are put into practical use only in inland areas, desert areas, and coastal areas.
For example, solar power generation using sunlight is called “mega solar power generation”, and a power generation system of about 1000 KW / day is operating in Japan using fallow fields and hills.
However, Japan is located at 135 to 150 degrees east longitude and 25 to 45 degrees north latitude in the northern hemisphere, and has four seasons, so it is inevitable that it is in meteorological conditions such as rainy season, typhoon, and snowfall. . Furthermore, it cannot be said that there are climatic conditions that can effectively convert the sunlight to be irradiated into electricity, such as an average annual precipitation of 1500 mm (Tokyo).

In addition, wind power generation has been put into practical use on a small scale in some coastal areas, mountainous areas, and hilly areas. However, it has been reported that low-frequency sound generated when the propeller rotates in response to wind has a considerable effect on the human body and animal husbandry. Under these circumstances, in Japan, where many people live on the coastline, the area where wind power generation is installed is very limited.
In addition, although power generation using tide level difference has been put into practical use in some areas, even in Japan, which is surrounded by the sea on all sides, the place where the tide level difference effective for power generation can be obtained is also called the strait. These areas are limited to the area, and these places are excellent as fishing grounds, so it is necessary to consider measures for fisheries.
As described above, since power generation systems using renewable energy each have problems in Japan, it is difficult to put large-capacity power generation into practical use.
Therefore, in Patent Document 1, a solar power generation panel is laid on the ridge, and between the latitude 10 degrees north to 10 degrees south latitude and 170 degrees east longitude 120 degrees west on the Pacific Ocean at a slow speed of about the speed of a bicycle. Marine mobile solar power generation systems that generate electricity while sailing have been proposed.
Specifically, according to the invention of Patent Document 1, sunlight is converted into electric energy, and further, electric power is used for electric power for causing electrolysis to be converted into hydrogen, hydrogen is stored in a tank, and a recovery ship is stored. Since it is recovered and converted from hydrogen to electric energy or directly used, the solar energy obtained on the sea with long sunshine hours near the equator can be transported efficiently and inexpensively over a long distance. Have.

WO2011 / 048981

As described above, the invention of Patent Document 1 employs a method in which a tank storing hydrogen is transported by a recovery ship and converted from hydrogen to electrical energy at a power plant.
Then, when converting into hydrogen by electrolysis using the electric energy obtained from sunlight, the conversion method or the conveyance method with little energy conversion loss is anxious.
Further, in place of the above-described method of converting to hydrogen, a method of converting electric energy obtained from sunlight into another substance is eagerly desired.
On the other hand, a method is also conceivable in which sunlight is converted into electric energy and the electric energy is further charged in a battery and then transported. That is, as a means for transporting a large amount of generated electric power over the sea, it is considered to transport the piston as it is with electric energy by a dedicated ship full of batteries in order to avoid energy conversion loss.
The state-of-the-art battery technology will continue to develop with electric vehicles, and there is a high possibility of electric power transportation systems using batteries for electric vehicles.
Therefore, there is an urgent need to transport a high energy density storage battery that is stored using renewable energy while suppressing power loss.
The present invention has been made in view of the above, and as its purpose, when recovering energy using renewable energy, it can be transported in a state where the loss of the produced power is suppressed. An object of the present invention is to provide an energy transfer regeneration method.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a renewable energy regeneration method using a power supply unit that is arranged in a floating body floating on the water and outputs DC power generated using renewable energy. A charging step of charging a storage battery containing a cassette containing an electrolytic solution containing metal ions, an anode, and a cathode with DC power supplied from the power supply unit, and depositing metal ions on the cathode; A separation step of separating the cassette containing the cathode from the storage battery after charging; a transportation step of transporting the cassette containing the cathode from a first point to a second point different from the first point; A regenerating step of regenerating as a storage battery by installing the cassette in a storage battery container having an anode different from the anode after transportation to the second point. And wherein the Rukoto.

  In order to solve the above-mentioned problem, the invention according to claim 3 is a renewable energy regeneration method using a power supply unit that is arranged in a floating body floating on the water and outputs DC power generated using renewable energy. A charging step of charging a storage battery containing an electrolytic solution containing metal ions, an anode, and at least one cathode with DC power supplied from the power supply unit, and depositing metal ions on the cathode; A separation step of separating the cathode from the storage battery after charging, a housing step of housing the cathode separated by the separation step in a container, and the container housing the cathode from a first point to a first point A transport process for transporting to a second point different from the second point, and after the transport to the second point, the negative battery taken out from the container into a storage battery container having an anode different from the anode. Characterized by and a reproduction step of reproducing a storage battery by installing.

  In order to solve the above-mentioned problem, the invention according to claim 4 is a renewable energy regeneration method using a power supply unit that is arranged in a floating body floating on the water and outputs DC power generated using renewable energy. And charging a storage battery containing an electrolytic solution containing metal ions, an anode and a cathode integrated with DC power supplied from the power supply unit, and depositing metal ions on the cathode. A step of separating the electrode portion from the storage battery after charging, a housing step of housing the electrode portion separated by the separating step in a container, and a container in which the electrode portion is housed. By transporting from one point to a second point different from the first point, and after transporting to the second point, installing the electrode part taken out from the container in a storage battery container Characterized in that it and a regeneration step of regenerating a battery.

  According to the present invention, when recovering energy using renewable energy, the energy can be recovered after being transported in a state where the loss of the produced power is suppressed.

It is a figure which shows the image of a solar solar cell sailing power generation system. It is a figure for demonstrating the clear sky area on the Pacific Ocean. (A) (b) is a figure for demonstrating the laying example of a ridge structure. It is a figure for demonstrating the example of laying of another eaves structure. It is a figure for demonstrating the structure of a sail column installation unit. It is a figure for demonstrating the structure of a sail column installation unit. (A) is a top surface structural drawing of a ridge, (b) (c) is side surface sectional drawing of a ridge and the mobile trolley for repair. It is a figure for demonstrating an electrical storage and a conveyance method. (A) is a figure which shows the cycle of a mobile voyage, (b) is a figure which shows the electric power generation peak of the solar cell on the sea. It is a block diagram for demonstrating the hardware constitutions of a cell unit and a sail column installation unit. It is a figure shown about the renewable energy conveyance reproduction | regeneration method which concerns on 1st Embodiment of this invention, (a) (b) is a figure for demonstrating the structure of a lithium battery air battery. (A)-(e) is a schematic diagram for demonstrating the structure of a lithium battery air battery. It is a flowchart for demonstrating the renewable energy reproduction | regeneration method using a lithium air battery. (A)-(c) is a schematic diagram for demonstrating the structure and reproduction | regeneration method of the cassette for cathodes used for a lithium air battery. It is a figure shown about the renewable energy conveyance regeneration method which concerns on 2nd Embodiment of this invention, (a)-(g) is a schematic diagram for demonstrating the structure of a lithium battery air cell. It is a flowchart for demonstrating the renewable energy conveyance method using a lithium air battery (FIG. 15). It is a figure shown about the renewable energy conveyance reproduction | regeneration method which concerns on 1st Embodiment of this invention, and is a figure for demonstrating the structure of a magnesium air battery. It is a flowchart for applying and explaining a magnesium air battery to the renewable energy reproduction | regeneration method. It is a figure shown about the renewable energy manufacturing method, power generation method, and regeneration method which concern on 4th Embodiment of this invention, and is a flowchart for demonstrating applying the manufacturing method and power generation method of magnesium Mg to the renewable energy regeneration method. is there. It is a schematic diagram which shows the process until it produces | generates magnesium chloride from seawater. It is a figure for demonstrating the power generation method of magnesium Mg.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. .

<First precondition>
Next, the feasibility of solar cell sailing dredging, which is the premise of the present invention, will be described with reference to “feasibility of low-pacific Pacific solar cell sailing dredging power generation system” (September 2013).
First, the solar cell sailing ridge concept and the weather and sea conditions in the low latitudes of the Pacific Ocean will be explained.
FIG. 1 is a diagram showing an image of a solar solar cell sailing power generation system.
This energy system focuses on the ocean spreading to the front of the country, and aims to use solar energy at an order of magnitude larger than before while a large dredger fleet moves on the Pacific low latitude high seas. It is.
Since navigating on the high seas for commercial purposes is a right that should be recognized under international law, it may be considered basically free to generate electricity while navigating. In pursuit of a large solar cell dredging that can be easily achieved in the ocean, the ultimate goal is 25 km 2 (5 km × 5 km). Solar energy obtained per day is 8 kWh / m 2 , for example. For example, it is estimated by 12% (current value of a solar cell for home use).
The power generation amount per day is 8 kWh / m 2 × 0.12 × 25,000,000 m 2 = 24,000,000 kWh. This is equivalent to a daily power generation of 1,000,000 kW × 24h = 24,000,000 kWh at a 1 million kW class nuclear power plant operating continuously for 24 hours.

Over 8 kWh / m 2 / day, a fleet of solar cell dredgers and motherships sailing at low speed across the equator of the Pacific Ocean and sailing at low speed in the clear sky of the North and South Pacific using long-term weather forecast technology such as weather satellites Aims to generate solar power with strong solar energy.
As a similar idea of solar energy utilization in the ocean, in the 1970s immediately after the oil shock, the Yokohama National University and the University of Miami collected solar heat with a mirror installed on the anchor that stayed at a fixed point on the ocean, and generated electricity. A plan to produce and transport liquid hydrogen to the consumption area was considered. In the 1980s, the ship technology research laboratory at that time studied elemental technologies for realizing the above-mentioned marine solar thermal power generation plan.

This concept is in line with them, and in view of the recent rapid development of solar cell technology, the ship is always sailing on the high seas near the equator where free navigation is permitted under international law. Large power generation with comparable sunlight. Unlike solar power generation methods that require mirror focusing, solar cell power generation using solar cells can greatly reduce the need for calmness of the kites, and it is easy to take advantage of scale by simplifying and increasing the size of the kites. It is. As a result, it is possible to break down the conventional restrictions on the use of natural energy, such as small dispersion instability, and to make use of the merit of scale as large-scale core energy, and no similar proposals have been found so far.
The biggest feature of this concept is that it moves in search of the clear sky area of the power dredger fleet. This is a merit unique to the ocean, and by moving, the blockage of sunlight into the ocean just below can be suppressed in a short time without having a major impact on marine life. However, if a large amount of energy is used for the voyage of the fleet, its feasibility cannot be expected. Even at low speeds, movement by wind and ocean currents is essential. Long-term voyage plan in which a large number of dredging units constituting solar cell dredging (for example, if the total size is 5 km x 5 km, 2500 units with a plane size of 100 m x 100 m) are computer-analyzed based on weather satellite information, etc. Follow the low latitude sea area.

Sea transportation of the obtained electric energy is a big problem. A method of transporting hydrogen energy converted by seawater electrolysis with a tanker is conceivable. On the other hand, if the storage battery can be transported with electric energy, the energy conversion loss can be greatly reduced. Here, it is assumed that a new high-energy density storage battery developed by rapid technological advancement of the storage battery will be available in the near future, and the possibility of electric power transportation by a battery tanker will be pursued. On the other hand, transport by hydrogen or its compounds is also included in the field of view.
Each saddle unit is composed of a sail covered with a flexible solar cell and a lightweight float that supports the sail, and the sail has a structure in which the angle is controlled as much as possible in consideration of light receiving efficiency and sailing efficiency. Individual dredging units are connected by wires, pressure tubes, and electrical cables to form an aggregate, and move together in clear waters while generating electricity. At this time, a plurality of mother ships (for example, about four ships) move around the dredger unit according to the navigation of the dredger unit.
In the round-trip voyage from the home port to the operating sea area, a huge number of dredging units will be folded and transported and towed in a compact manner so that they can be deployed widely on the sea after arrival at the power generation area. The mother ship is responsible for the entire dredging fleet operating functions, including power generation and sailing control, maintenance and repair of dredging units, temporary storage of generated power and delivery to battery tankers.

If this system, which can use natural energy as core energy, can be put into full-scale practical use, not only will Japan be able to achieve full carbon reduction, but it will also be a pioneer in causing radical changes in the form of energy use for the entire human race. It becomes. In other words, the dependence on fossil fuels will decrease, and it will approach the realization of a sustainable society that supports human civilization with solar energy. In fact, as will be described later, the low-latitude sea area with abundant solar radiation is so large that not only Japan but many other countries in the world can cover a large number of dredging fleets to cover the main energy. This concept of gathering low-density natural energy intensively in the low-latitude sea area of a vast area breaks the limitations of conventional use of natural energy and can play a leading role in energy.
To achieve this, technical and economic development efforts are not enough, and international consensus building and understanding promotion activities in places like the United Nations are indispensable. To that end, it is necessary to expand from early stages to development programs involving not only domestic but also overseas groups. In this way, the purpose and scale of this concept are global, and it is clear that it should be promoted as a national project or an international project from the stage when the basic prospects are obtained.

Here, the high energy density storage battery will be verified.
As a means of transporting a large amount of generated electric power by sea, it is considered to transport the piston with electric energy as it is by a dedicated ship full of batteries in order to avoid energy conversion loss.
The state-of-the-art battery technology will continue to develop with electric vehicles, and there is a high possibility of electric power transportation systems using batteries for electric vehicles. For this reason, a huge tanker that has finished its use is used as a tanker that can transport a large number of packages each containing several tens of automobile batteries. It is assumed that the battery is transported to the charging station in units of packages, and a system that replaces the entire used battery for each automobile is assumed. At present, the maximum energy density of a battery is about 0.1 to 0.2 kWh / kg for a lithium ion battery.
According to the NEDO roadmap, the goal is to improve the energy density to 0.7 kWh / kg by developing a new battery (such as a zinc-air battery) about 20 years ago. An electric vehicle can travel approximately 10 km per kWh, and requires 50 kWh of power for a continuous travel distance of 500 km.

If this future type battery is realized, the battery mass per battery will be 50 kWh ÷ 0.7 kWh / kg≈70 kg / piece. Consider a case in which the power generated by a solar cell giant dredger fleet of 5 km × 5 km is ultimately transported using a battery having this energy density.
For example, the power generation amount per day is 8 kWh / m 2 × 0.12 × 25 × 10 6 m 2 = 24 × 10 6 kWh / day. When this is divided by 50 kWh / piece, 24 × 10 6 kWh / day ÷ 50 kWh / piece = 4.8 × 10 5 pieces / day, that is, 480,000 pieces per day, and the battery mass is 70 kg / piece × 4.8 × 10 5 pieces / day≈3.4 × 10 7 kg / day → 34,000 t / day.

The largest oil tanker (VLCC) currently in operation has a loading mass of 300,000 to 500,000 tons, for example. If the same class tanker is used as a battery tanker, a large 5km square dredger fleet can be put into practical use. Even if it is changed, the generated power for about 10 days to 2 weeks can be carried.
Currently, VLCC makes one round trip in about 40 days, including the round trip between Persian Gulf and Japan, and consumes 4000 kL of heavy oil in the 300,000-ton class.
With reference to this, the voyage energy of the battery tanker is considered to be about the same, and when 4000 kL of heavy oil is converted into secondary (electric) energy (assuming the conversion rate is 35%), the calorific value of heavy oil is, for example, 1 × 10 7 kcal. / KL is 4000 kL × 1 × 10 7 kcal / kL × 1.163 × 10 −3 kwh / kcal × 0.35 = 16.3 × 10 6 kwh. This is equivalent to about 6% of the electric energy of 10 days carried by one tanker 24 × 10 6 kWh / day × 10 day = 240 × 10 6 kWh.
In the case of a battery tanker, it may be possible to charge the battery directly from the mother ship for about 10 days to 2 weeks, so the cargo handling time may be longer, and there will be a detailed study on a 5km square solar cell dredger fleet. Necessary, but multiple tankers are required. In addition, since the number of batteries required for this is enormous, it is considered necessary to use a high energy density battery dedicated to power transportation larger than that for automobiles.

Next, the development of an innovative kite floating structure will be described.
As for the solar cell cage for generating power, about 2500 units are required when the planar size of one unit is 100 m × 100 m, for example. It can be inferred from the above-mentioned battery tanker's navigational energy that a large dredger fleet needs to be driven by power by rotating a screw. Required. Each kite unit is composed of a sail and a pillar covered with a flexible solar cell and a float supporting the sail, and the angle of the sail is controlled in consideration of light receiving efficiency and sailing efficiency. However, if the angle is increased, the light-receiving efficiency is reduced due to the shadow on the adjacent unit, and the angle adjustment within the range is not so large due to the limitations of the structure and strength of the ridge.

  Conventional rigid floating bodies made of steel or concrete are not realistic from an economic point of view, and it is necessary to create an innovative floating structure that is lightweight and foldable using new materials. The float of each unit employs a semi-submersible floating body in order to reduce the rocking caused by waves, and a solar cell canvas is attached to the sail column that stands on it. The float buoyancy and canvas angle will be controlled by compressed air pressure. In the round-trip voyage from the home port to the operating sea area, a huge number of dredging units are towed compactly and towed so that they can be deployed widely after arrival at the power generation area. There is no doubt that pioneering ideas that have not been considered in the past are needed even when navigating mainly in good weather. In addition, float durability and prevention of deterioration are considered to be major issues, and in particular, measures to prevent functional degradation due to attachment of marine organisms are expected to be major issues.

<Second prerequisite technology>
Next, a solar solar cell sailing kite power generation system, which is the second premise technology, will be described with reference to “Establishment of low history Pacific solar cell sailing kite power generation system” (October 2013) which is a premise of the present invention. .
The offshore power generator will be described with reference to the perspective view shown in FIG.
Examples of offshore power generation devices include solar power generation and wind power generation. Here, an example of a soot solar power generation device is shown.
As shown in FIG. 1, the solar power generation device is connected to 200 pieces on one side, for example, with a canvas-like solar power generation sheet laid on a square fence of 25 m × 25 m as a unit, for a total of 5000 m (5 km) It is laid, and 200 × 200 (40000) kites arranged on the entire surface are sailed offshore to generate electricity.

Next, the clear sky region over the Pacific Ocean will be described with reference to the map shown in FIG.
As shown in Fig. 2, the clear sky over the Pacific Ocean has strong solar radiation from April to August in the North Pacific and from October to February in the South Pacific. In the low-latitude Pacific area across the equator, the amount of solar radiation is generally large, but it is maximal in the sea area a little further north and south than just below the equator. This band-like solar radiation maximum occurs because it is within the subtropical high.
Thus, the above-mentioned area is a place suitable for running a soot solar power generation device.
As shown in FIG. 2, the place where the soot solar power generator navigates is in the range of approximately 25 degrees north latitude to 25 degrees south latitude and 170 degrees east longitude to 120 degrees west across the equator. This area is suitable for solar power generation with few large islands and few tropical cyclones.
The soot solar power generator sails in this area at 10 km / hour to 20 km / hour (approximately the speed of a bicycle). The reason for navigating even at low speed is that it does not affect marine life on the bottom of the ridge.

Next, we will explain the weather and sea conditions in the Pacific low latitudes.
The following are the results of a rough survey based on the information available at the present time in order to find out how well the weather and sea conditions in the Pacific low latitudes are actually suitable for this photovoltaic system.
Here, the solar radiation conditions will be described.
According to the global solar radiation energy distribution in the New Solar Energy Handbook, the maximum annual average solar radiation energy is about 5 kWh in the sea area within 25 degrees north latitude and south latitude across the equator of the Pacific Ocean. Here, the horizontal solar radiation data calculated by NASA using satellite information from July 1983 to June 2005 was used. In the original NASA data, 1-degree mesh global data from 90 degrees north latitude to 90 degrees south latitude, 0 degrees west longitude and 180 degrees east longitude is stored continuously in one file (5 MB). In order to extract the Pacific north-south low latitude sea area that we need from this enormous amount of original data, enormous work such as data rearrangement is necessary, and a calculation program was created and automatically extracted.

The average daily solar radiation of the horizontal plane from 30 degrees north latitude to 30 degrees south latitude and 130 degrees east longitude to 90 degrees west longitude of the central Pacific Ocean obtained in this way is from the south of the Japanese archipelago to Australia in the west. To the south of the continent, from the California peninsula far east of the Hawaiian Islands to the waters including the Pacific Ocean off Peru, the sea area of 6.0 kWh / m 2 / day or more spreads in a wide band, especially 15 degrees south latitude from the equator near South America There is a vast sea area that reaches 6.5 to 7.0 kWh / m 2 / day. This is an average value for one year, but the coefficient of variation for 12 months of the monthly average value that can be obtained from the original NASA data is less than 10% within 10 ° north latitude and south latitude, and 30 ° north latitude and south latitude. It changes almost continuously up to about 30% in the vicinity. It is certain that the maximum value will greatly increase from the average value by moving in the clear sea area considering such seasonal variation.

The strong solar radiation area has a portion that overlaps with the exclusive economic zone (EEZ) of each country. Solar energy that falls without interruption is clearly different in nature from fishery and submarine resources lost due to seizure and should not be subject to EEZ regulation.
However, even if it is regulated by EEZ, it can be seen that there is a large area of the high seas that surpasses the Australian continent where the annual average energy is 6.0-7.0 kWh / day, mainly in the eastern Pacific. Of course, field trials are necessary in consideration of the speed of the dredging and the speed of the clear sky, but it is possible that the dredging fleet can obtain solar radiation energy of 8.0 kWh / day or more by taking advantage of its mobility. I think that the.

Next, with reference to the top view shown in FIG.
As an example of laying the solar cell rod 101, as shown in FIG. 3A, one unit is set to 100 m × 100 m, for example.
FIG. 3A shows, for example, a square structure with a side of 5 km. The minimum unit is composed of, for example, 25 m × 25 m. The minimum unit is fixed by a joint part 104 (FIG. 3B) that can be easily attached and detached in four directions.
The solar cell rod 101 has a joint part 104 that removably connects adjacent solar panels among a plurality of solar panels, and the joint part 104 is detached from the solar panel in an abnormal state, so that Detach and allow maintenance.
The solar cell rod 101 is configured by combining a plurality of floating bodies, and any of a square shape, a rectangular shape, a regular triangle shape, a regular pentagonal shape, and a regular hexagonal shape can be used for coupling the floating bodies to each other. One is sufficient.

The dredger fleet structure of the solar cell dredger 101 will be described.
(1) Structure of solar cell cage 101 The area of the solar cell cage 101 is, for example, 5 km × 5 km = 25 km 2 = 2500 ha. This is configured by connecting 2,500 pieces of units of 100 m × 100 m = 10,000 m 2 = 1ha as a basic unit.
The solar cell rod 101 is a unit of 25 m × 25 m as a basic unit using a structural material, and for example, 16 units are connected to create a unit of 100 m × 100 m. In this case, the size of one sail (solar panel) 102 is 10.5 m × 10.5 m.
The heel shall be a frame structure and be supported by a submersible float. The units can be connected to each other via the joint portion 104 to allow flexible movement. Put four sails (10.5m x 10.5m) in a 25m x 25m unit. The bottom of the sail is the sea level, so a fall prevention net is installed. On the outer periphery of the 25 m × 25 m unit, for example, a 1.5 m walkway for inspection and repair is installed. When the width of the frame member is 1 m, the repairing movable carriage can travel on this. However, a handrail for preventing fall will be installed.

Further, the solar cell rod 101 is provided with a buffer zone / inspection passage 103 at intervals of 1000 m.
Although it is unavoidable that the structural material that supports the area of the sail and the area for inspection and repair become larger, it is possible to increase the proportion of the area of the sail with the progress of the structural material. The current area ratio is (10.5 × 10.5 × 4) ÷ (25 × 25) = 70%.
In trial design and model creation, it is considered that four units of 25 m × 25 m are made and connected in the trial design stage. Once you have a basic unit, you can create a large unit by connecting many of them.

(2) Basic unit of bag Considering a unit of 25 m × 25 m as described above, a structure as shown in FIGS. 7A and 7B is considered.
As for the material, steel is first considered for both the frame structure and the float. After studying the materials, we will consider resin-based structural materials and rubber floats in the future to reduce weight and reduce production costs.
For example, three joints 104 are installed at the end of the beam, for example, three on four sides, and a total of 12 joints 104 are connected. Assemble it into a 5km x 5km kite. As shown in FIG. 3B, the structure of the joint portion 104 may be the same as that of the connecting portion of the train, for example.

Next, with reference to a top view shown in FIG.
As another example of laying the ridge structure, as shown in FIG. 4, one side is set to 2 km × 12.5 km, for example. The minimum unit is composed of 25 m × 25 m as in FIG.
As described above, since a large number of solar panels are laid on the ridge, a decrease in the amount of power generated by one unit of panel results in a decrease in overall efficiency, and maintenance is required to maintain the amount of power generated. The decrease in the amount of power generation occurs due to various factors such as salt generated by seawater adhering to the solar surface and drying, or natural degradation of the solar panel body, for example, because the ship sails offshore.
A decrease in power generation amount of the solar panel is constantly monitored by a monitoring device (not shown) installed for each solar panel.
When the monitoring device receives this signal, it starts the repairing mobile trolley from the sail column installation unit 110 installed everywhere, and goes to the heel alone where the power generation amount is reduced, and performs cleaning or replacement of the panel sheet. Is what you do.

Next, the structure of the sail column installation unit will be described with reference to the plan structure diagram shown in FIG. The numerical values shown in FIG. 15 are described as an example, and other values may be adopted.
As an example of the planar structure of the sail column installation unit 110, as shown in FIG. 5, a loading structure, articles, equipment, and the like are provided.
Details of the articles and equipment loaded on the sail column installation unit will be described.
The sail column installation unit 110 moves the solar cell when the sail column 111 is arranged at the center position of the unit, and also maintains and manages the solar cell in the shared range and stores the generated electricity in a battery and transports it to the mother ship. In addition, a lighting device will be installed at the tip of the pole for night safety.
For example, 126 sail column installation units 110 are installed at intervals of 200 m on both sides in the extending direction of the solar cell 2,000 m × 12,500 m.
The size of the unit is 25 m × 25 m in a plane. The height of the sail column 111 is 20 m, and the sail 111 is self-propelled with a sail, and a lighting device for night safety is attached to the tip.
A material storage 112 for storing repair equipment, a repairing mobile carriage 113, a storage battery 114, an inverter 115, and a rest / maneuvering space (not shown) are provided on the sail column setting unit 110.
The sail column installation unit 110 is provided with a self-propelled screw so that it can be self-propelled without wind.
The storage batteries 114a and 114b store 80% of the electric power supplied from a 200 m × 1,000 m solar cell and transport it to Japan by a transport ship.
In the storage batteries 114c and 114d, 20% of electric power supplied from a 200 m × 1,000 m solar cell is alternately stored and used for unit operation.
The total weight of the storage batteries 114a to 114d and the inverter 115 is 2,280t.

Here, the storage battery mounted on the sail column installation unit shown in FIG. 5 will be described in detail.
We have been conducting research on the idea that electricity generated in a 5km x 5km solar cell is stored in a battery and 10 days are transported to Japan by a transport ship.
Considering a distributed storage battery arrangement in which one storage battery is installed in a range of 200 m × 1,000 m as the storage battery arrangement, the number, weight, and volume of storage batteries are estimated.
Storage batteries initially considered NAS batteries as promising candidates, but it turns out that current NAS batteries use all the electricity stored in 7.5 days if they are transported to Japan and use electricity to keep warm. It was. Here, it is assumed that a storage battery with a development target of 0.7 kWh / kg of NEDO will be developed, and storage and transportation of the battery assumed in the future.
As a precondition for the trial calculation (see FIG. 5), for example, electricity generated in a solar cell in the range of 200 m × 1,000 m is charged to the batteries (storage batteries 114 a to 114 d) of the sail pole installation unit. The storage batteries 114a and 114b are used for power transportation to Japan, and the storage batteries 114c and 114d are used for the operation of the sail pole installation unit. The storage batteries 114a and 114b each store for 5 days and both for 10 days.
Each of the storage batteries 114a and 114b has a capacity of 80% of electricity generated by a solar cell in the range of 200 m × 1,000 m for 5 days. The storage batteries 114c and 114d are alternately set to have a capacity for charging the remaining 20% (the required power amount is not calculated). Electricity charged in the storage batteries 114a and 114b is carried to Japan by a transport ship every 10 days. In order to reduce the weight of transshipment, the battery is divided into two parts: alternating with new batteries.

Next, the calculation of the battery capacity will be described.
For example, the shared area is 200 m × 1,000 m = 200,000 m 2 , the generated power is 8 kWh / m 2 × 0.12 × 200,000 m 2 = 192,000 kWh, and the number of batteries for one day is 192,000 kWh ÷ 50 kWh = 3,840 units, the weight of the battery for one day is 70 kg / unit × 3,840 units = 269 t, the capacity of the battery for one day is 0.7 m 3 / t × 269 t = 188 m 3 , and the number of storage batteries 114 a is 3,840 units × 0.8 × 5 days = 15,360 units, and the weight of the storage battery 114a is 269t × 0.8 × 5 days = 1,076t.
Volume of the battery 114a is 188m 3 × 0.8 × 5 days = 752m 3, this volume, leading to 3 √752 = 9.1m → 10 × 10 × 8m in terms of the cube.
The number of storage batteries 114c is 3,840 × 0.2 = 768, the weight of the storage battery 114c is 1,076t × 0.2 = 54t, and the volume of the storage battery 114c is 188m 3 × 0.2 = 38m 3 . In terms of this volume into a cube, a 3 √38 = 3.4m, 5 × 5 × 1.5m or 5 × 4 × 2m.

Next, a trial calculation of the capacity of the inverter 115 will be described.
For example, the shared area is 200 m × 1,000 m = 200,000 m 2 , the generated power is 8 kWh / m 2 × 0.12 × 200,000 m 2 ÷ 8h = 24,000 kW, and the number of inverters 115 is 24,000 kW ÷ 1, 000 kW = 24 units, and the weight of the inverter 115 is 2.5 t / unit × 24 units = 60 t.
4 and 5 have a structure shown in FIG. 4 and FIG. 5. For example, a large number of such pillar installation units are arranged on the outer periphery of the heel unit laid with the solar panel shown in FIG. 3 or FIG. When an abnormal signal transmitted from the unit is received, the unit goes to the single unit and performs operations such as inspection and parts replacement, returns to the original storage position, finishes the next preparation, and ends the series of operations.
In this case, it is a necessary condition to arrive at the single unit that has transmitted the signal in the shortest time.

Next, the structure of the sail column installation unit 110 will be described with reference to the side view shown in FIG.
The repairing mobile carriage 113 is a repairing mobile truck for loading necessary equipment and the like to a unit that transmits an abnormal signal of the solar panel and moving on a passage provided on the fence. An electric motor is mainly used for the power of the repairing mobile carriage. As shown in FIG. 6, between the units of the solar panel, a path through which the repairing mobile carriage can travel is provided.
The sail pillar installation unit 110 is provided with a self-propelled screw 116 so that it can be self-propelled without wind.
In FIG. 6, the traveling screw 116 is illustrated, but it is also possible to sail with the sail 111 standing.
In order to suppress the influence of waves as much as possible, it is also possible to provide a plurality of center boards (used for yachts) or to extend a stabilizer for running stability. The center board and stabilizer are not shown.
The following is a supplementary explanation of the loaded equipment.
As repair equipment, a solar cell for replacement, tools for cleaning attached salt, repair tools, and the like are stored here.
Two batteries are mounted: a battery for storing electricity generated by the solar cell and sending it to Japan, and a power battery for running the main pole installation unit 110.
It has a function of maneuvering the main pillar installation unit 110 as a rest / steering space.
In addition, daily equipment such as breaks, bedding, kitchen equipment, and toilets are provided for long working hours.

Next, referring to the top structural view of the saddle 101a shown in FIG. 7 (a) and the side sectional view of the saddle 101a and the repairing mobile carriage 113 shown in FIGS. 7 (b) and 7 (c), the repairing mobile carriage 113 The side structure will be described.
In FIG. 7A, the flange 101a includes a solar panel 102, a passage 121 between the solar panel row and the solar panel row adjacent to the solar panel row, and a float 122.
On the other hand, the repairing mobile carriage 113 is provided with a tire 125 traveling on the passage and a carriage outrigger 126 for maintaining the repairing mobile carriage 113 in a stationary state on the eaves. The cart outrigger 126 is stored in a folded state in the repairing mobile carriage when the repairing mobile carriage 113 is traveling on the roof.
A crane 120 for moving materials is provided on the repairing mobile carriage 113.
The repair movable carriage 113 travels over the solar panel 102 provided on the rod 101a and performs maintenance and inspection work on the solar panel in an abnormal state where an alarm signal is transmitted.
The repairing mobile carriage 113 is disposed on the sail column installation unit 110 or on the outer periphery of the solar cell rod 101 in a normal state where there is no maintenance inspection of the solar panel.

Next, with reference to a schematic diagram shown in FIG.
If solar cell cage 101 stores electricity in the range of 200 m × 1,000 m for 10 days, the estimated storage battery will be 269 t for 1 day and 2,690 t for 10 days. In the estimation of the previous section, it is considered that 20% of the power generation amount is used in the sail column installation unit, so the weights of the batteries 1 to 4 on the sail column installation unit are 2,260 t. When the weight of the inverter 115 is added to this, the total is 2,320 t.
Considering the result of this trial calculation, it is difficult to collect electricity in the range of 5 km × 5 km at one place, and it is assumed that a distributed battery is arranged.
As an example, a 2 km × 12.5 km snake-shaped cage structure (FIG. 4) was considered. If this is the case, it is likely that the power stored in the sail column installation unit can be moved from the side to the transport ship. The upper and lower squares are sail column installation units, and 126 units are installed in the extending direction. Electricity is stored in a range of 200m x 1,000m, colored on the battery on the trolley, and the battery is transferred from here to a transport ship for transport to Japan.
As shown in FIG. 9 (a), let us consider a cycle in which six fleets discharge in 10 days, travel on 20th, charge on 10th, and travel on 20th. It should be noted that, depending on the future study, if the entire battery can be reloaded, the charge / discharge time may be considerably shortened.
A battery tanker that specially collects electric energy may be used.
As shown in FIG. 9 (b), the power generation peak of the offshore solar cell needs to be 1 million kW / 0.14 = approximately 7 million kW, assuming that the equipment operation rate is the same as that in Japan (14-15%). There is.

Next, with reference to the block diagram shown in FIG. 10, the hardware configuration of the sail column installation unit will be described.
First, the configuration of the cell unit 130 will be described.
The cell unit 130 is composed of an assembly of a plurality of solar cells 131. For each cell unit, a connection box 132 connected to a solar cell by a wiring cable is provided, and the connection box 132 is provided with a converter, a microcomputer (computer), and a modem.
Each solar cell 131 has a function of measuring and transmitting basic information such as power generation amount and temperature.
The connection box 132 is provided with a microcomputer (computer) used for data collection, and a voltmeter and an ammeter are connected to each wiring cable connected to each cell (10.5 m × 10.5 m). deep.

A unique ID is stored in the memory provided in each microcomputer, and the number of the defective cell can be confirmed from the number (No) of the wiring cable connected to each cell. .
A representative point in the vicinity of the junction box (about one in 200 m × 200 m) is selected, and a sensor 133 such as an illuminometer, thermometer, wind direction / anemometer, GPS (position information) is installed and output from the sensor 133. Sensor information is collected by the microcomputer.
The converter provided in the connection box 132 converts DC power supplied from each cell into high-voltage (for example, 1000 V) DC power and outputs it to the transmission line 134.
Note that DC power supplied from each cell may be connected in series to form high-voltage (for example, 1000 V) DC power and output to the transmission line 134.
The modem provided in the connection box 132 performs power line communication PLC communication with the modem provided in the connection box 136A of the sail pole installation unit 135 (power supply unit) via the power transmission line 134. Note that wireless communication may be used for communication between the cell unit 130 and the sail column setting unit 135.

Next, the configuration of the sail column installation unit 135 will be described.
The sail pole installation unit 135 is disposed on the side of the offshore 101 for the purpose of operating and managing the cell unit 130, and materials used for maintenance and inspection of the solar cell and personnel for operation and management are always provided. Further, the sail column installation unit 135 is provided with the anchoring position of the sail column installation unit and the anchoring position of the mother ship.
Each information transmitted from the cell unit 130 is received by the modem provided in the connection box 136A of the sail pole installation unit 135 via the power transmission line 134, and further output to the computer 137A.
The computer 137A collects information from each cell unit 130, stores each information in the database 138A as history information, and displays it on the operation panel 139A or the like as necessary.

In addition, the computer 137A calculates an operation route based on the operation plan of the kite 101. The computer 137 </ b> A collects and processes GPS position information from the GPS receiver and performs navigation control of the kite 101. The computer 137A calculates the running power by the wind from data such as the time average irradiation amount, the wind direction, the anemometer, the cell angle, the ship direction, etc., and controls the panel so that the panel is directed toward the sun. . For this purpose, the sail column installation unit 135 includes a controllable working sail, a small motor-driven screw, and the like. The computer 137A acquires meteorological satellite data / information for weather prediction (weather forecast).
The computer 137A includes a ROM, a RAM, and a CPU. The computer 137A reads the operating system OS from the ROM, expands it on the RAM, starts the OS, reads the program from the ROM under OS management, Perform control processing and the like.

The converter provided in the connection box 136A converts the high-voltage DC power supplied from each cell unit 130 through the transmission line 134 into low-voltage DC power, and supplies the storage battery 141A from the wiring cable for charging. To do.
When there is a demand for power supply from the offshore factory mother ship to the sail pillar installation unit 135, the cable 151 from the offshore factory mother ship is connected to the converter provided in the connection box 136A of the sail pillar installation unit 135, and the storage battery is connected via the converter. For example, a lithium-air battery mounted on a marine factory mother ship is used to charge the power. When the power stored in the storage battery on the currently used sail column installation unit 135 is exhausted, the offshore factory mother ship moves to the next sail column installation unit 135 and continues the operation.
The wireless device 140A is connected to the computer 137A, and communicates information by performing wireless communication with the wireless device 140 on the other unit side.
In addition, the sail column setting unit 135 receives GPS information from GPS receivers provided at several places such as the four corners of the rod 101 and causes the computer to manage the position information.

<First Embodiment>
Next, the renewable energy transfer regeneration method according to the first embodiment of the present invention will be described.
In the present embodiment, a renewable energy transfer and regeneration method when a lithium air battery is to be charged instead of the storage battery provided in the above-described sail column installation unit 135 will be described.
The configuration of the lithium-air battery will be described with reference to the schematic diagrams shown in FIGS.
The lithium-air battery 201 is a dischargeable battery using metallic lithium as an active material for the cathode 202 and oxygen in the air as an active material for the anode 203. Lithium is most likely to be an ion among metals, and when this is used as a cathode, the potential difference from the anode 203 is large and a high voltage can be obtained. In addition, since the size of the atoms is small, the electric capacity per mass can be increased. Since oxygen, which is an active material of the anode 203, does not need to be included in the battery cell, a capacity larger than that of a lithium ion battery can be expected theoretically.
The electrolyte is an ion that becomes an ion when dissolved in water, such as sodium chloride (NaCl). Electricity (ions) flows through the electrolyte aqueous solution 204. Here, the solid electrolyte is a substance in which ions flow (move) in a solid state.
The discharge capacity density mAh / g of the air electrode is the discharge capacity milliampere time per g of electrode mass.
An active material is a substance that emits or takes in electrons by a chemical reaction with an electrolyte. An active material that emits electrons is called a cathode active material, and an active material that takes in electrons is called an anode active material.

Below, the operation | movement at the time of discharge (a) and charge (b) of the lithium air battery 201 is demonstrated.
The following contents are based on materials provided by the National Institute of Advanced Industrial Science and Technology on the website.
(Http://www.aist.go.jp/aist_j/press_release/pr2009/pr20090224/pr20090224.html)
The cathode 202 of the lithium air battery 201 is metal Li, and the anode 203 is an air electrode made of porous carbon.
(1) As shown in FIG. 11A, the reaction at the electrode during discharge is as follows.
Reaction at cathode 202: Li → Li + + e
Metallic lithium is dissolved in the organic electrolyte as lithium ions (Li + ), and the electrons are supplied to the conductive wire. The dissolved lithium ions (Li + ) pass through the solid electrolyte and move to the aqueous electrolyte solution of the anode.
Reaction at anode 203: O 2 + 2H 2 O + 4e → 4OH
Electrons are supplied from the conductive wire, and oxygen and water in the air react on the surface of the fine carbon to produce hydroxide ions (OH ). In the aqueous electrolyte solution of the anode, lithium ions (Li + ) are encountered and become water-soluble lithium hydroxide (LiOH).
The water-soluble electrolyte takes in air at the time of discharge and becomes high concentration LiOH. Transport this concentrated LiOH solution (strong alkali). At this time, the metal Li of the cathode 202 dissolves into the electrolyte and decreases.

(2) As shown in FIG. 11B, the reaction at the electrode during charging (by the generated power offshore) is as follows.
Reaction at cathode 202: Li + + e → Li
Electrons are supplied from the conductive wire, and lithium ions (Li + ) pass through the solid electrolyte from the aqueous electrolyte solution of the anode and reach the cathode surface, and a lithium metal deposition reaction occurs at the cathode.
Reaction at anode 203: 4OH → O 2 + 2H 2 O + 4e
Oxygen evolution reaction occurs. The generated electrons are supplied to the conducting wire.
The concentration of LiOH in the aqueous solution decreases, and the metal Li at the cathode increases in accordance with the deposition of metal lithium at the cathode. In the present embodiment, the cathode in which metallic lithium is deposited is separated and transported.

With reference to the schematic diagrams shown in FIGS. 12A to 12E, the configuration and the regeneration method of the lithium-air battery will be described.
FIG. 12A shows a state during charging. The storage battery 205 contains a plurality of negative electrodes 207a, positive electrodes 207b, and electrolyte 206, and metallic lithium is deposited on the cathode 207a. .
FIG. 12B shows a separated state after charging, that is, a state in which the cathode 207a is accommodated in the container A 208a and the electrolyte solution 206 is accommodated in the container B 208b from the storage battery 205 in an argon gas atmosphere. Since the cathode 207a is in an argon gas atmosphere and cannot be discharged, the stable state is maintained.
FIG. 12 (c) shows that the container A 208a containing the cathode 207a is transported, and the container A is transported from the ocean to Japan by a transport ship. The container B 208b containing the electrolytic solution 206 may be transported from offshore to Japan by a transport ship.
FIG. 12D shows a state in the middle of forming the storage battery 209, and shows that the cathode 207a taken out from the container A 208a is installed in the storage battery 209 having the anode 207b.
FIG. 12 (e) shows a dischargeable state (formation complete state) of the storage battery 209. The storage battery 209 contains one negative electrode 207a, one positive electrode 207b, and an electrolyte 206.

With reference to the schematic diagram shown in FIG. 12 and the flowchart shown in FIG. 13, a method for regenerating a lithium-air battery will be described.
(1) Japan In Japan, a user discharges electric power from the lithium air battery 209 to the load side (for example, a vehicle). The lithium air battery 209 is recovered from the vehicle that has stopped discharging. Further, the cathode 207a is separated from the lithium-air battery 209 and accommodated in the container A 208a, and the electrolytic solution 206 sufficiently containing lithium ions is collected in the container B 208b and collected.
A new battery will be provided to the user of the lithium air battery 209.
(2) Transport ship The container A 208a containing the cathode 207a and the container B 208b containing the electrolyte 206 are transported from Japan to a marine factory mother ship by a transport ship.
Supply container A and container B to the mother ship of the offshore factory.
(3) Offshore factory mother ship The cathode 207 a is taken out from the container A and installed in the battery container 205, and the electrolyte solution 206 is injected from the container B into the battery container 205.
The offshore factory mother ship moves in parallel with the dredger fleet and charges the lithium air battery 205 using the power generated by the solar cell of the anchor 101 on the mother ship. As a result, metallic lithium is deposited at a plurality of cathodes 207a in one lithium-air battery 205.
The offshore factory mother ship is connected to a converter provided in the junction box 136A of the sail column installation unit 135, and the lithium air mounted on the offshore factory mother ship using the power supplied from the storage battery via the converter. Charge the battery with power. When the power stored in the storage battery on the currently used sail column installation unit 135 is exhausted, the offshore factory mother ship moves to the next sail column installation unit 135 and continues the operation.

(4) Production of Lithium at the Marine Factory Mother Ship By charging the lithium air battery 205 carried by the carrier ship, lithium ions are deposited on the surface of the lithium metal as the cathode 202.
Next, while injecting argon gas into the lithium-air battery 205, the cathode 207a in the battery container 205 is moved to and accommodated in the container B 208a. As a result, a container A 208a having a cathode 207a under an argon gas atmosphere and a container B 208b for storing an electrolytic solution are prepared.
(5) Transport ship After transferring the container A208a (argon gas atmosphere, no electrolyte) containing the cathode 207a manufactured by the offshore factory mother ship and the container B208b containing the electrolyte from the offshore factory mother ship to the transport ship, transport.
After arriving in Japan, the container 208a (argon gas atmosphere, no electrolyte) and the container B208b are landed.
(6) Japan The cathode 207a is taken out from the container A 208a and moved to the battery container 209, and the electrolyte solution 206 is injected into the battery container 209 from the container B 208b to assemble the lithium-air battery 209.
Next, when the lithium air battery 209 is shipped and the lithium air battery is mounted on the user's vehicle, the power output from the lithium air battery when the vehicle is operated is used.
Subsequently, it returns to a process (1). By collecting the cathode 207a and the electrolyte solution 206 from the discharged lithium-air battery, a lithium circulation cycle can be performed.

In the above (4) lithium production process at the offshore factory mother ship, the cathode 207a in which lithium ions are deposited is accommodated in the container 208a, and after the container 208a accommodating the cathode 207a is transported (5), (6 ) In Japan, the lithium air battery 209 was assembled, and the lithium air battery was installed in the user's vehicle. However, the present invention is not limited to such a configuration.
That is, a detachable cathode cassette may be provided in a lithium-air battery container mounted on a vehicle, and the cathode 207a may be accommodated in the cathode cassette.

Specifically, with reference to the schematic diagrams shown in FIGS. 14A to 14C, the structure and the regeneration method of the cathode cassette used in the lithium-air battery will be described.
FIG. 14 (a) shows the state of charging in the lithium manufacturing process at the offshore factory mother ship. The storage battery 270 includes a positive electrode 271, a removable cathode cassette 272 in which a negative electrode is accommodated, electrolysis. A liquid (not shown) is contained. The cathode cassette 272 is provided with a slit 273 into which an electrolytic solution can enter, and metallic lithium is deposited on the cathode 272 in the cathode cassette 272.
FIG. 14B shows a separated state after charging, that is, a state in which the cathode cassette 272 containing the cathode is stored in the bag-like container 274 from the storage battery 270 in an argon gas atmosphere. Since the cathode in the cathode cassette 272 is in an argon gas atmosphere and is in a state where discharge is impossible, a stable state is maintained. The container 274 is transported from the ocean to Japan by a transport ship.
In a Japanese gas station, replenishment is possible by replacing the cathode cassette 272 taken out from the bag-like container 274 with a discharged cathode cassette of the storage battery 275 mounted on the vehicle.
FIG. 14C shows a storage battery 275 that can be mounted on a vehicle, and the storage battery 275 contains a positive electrode 276, a cathode cassette 272 containing a cathode, and an electrolyte.

In this way, in the lithium manufacturing process at the offshore factory mother ship, the cathode 207a on which lithium ions are deposited is housed in a detachable cathode cassette, and the cathode cassette containing the cathode is transported to Japan. Replenishment is possible by exchanging the cathode cassette that has arrived at the gas station with the discharged cathode cassette mounted on the vehicle.
By returning the cathode cassette containing the discharged cathode to the offshore factory mother ship, the cathode cassette containing the cathode can be reused.
In addition, in a gas station, after replacing the cathode cassette several times, the electrolyte solution is extracted and collected from the lithium-air battery mounted on the vehicle to regenerate the lithium metal dissolved in the electrolyte solution. Good.
In the present embodiment, a lithium-air battery has been described as an example of the metal-air battery, but the present invention is not limited to such a configuration. That is, the metal-air battery is a magnesium-air battery having magnesium metal as a cathode, a sodium-air battery having sodium metal as a cathode, a calcium-air battery having calcium metal as a cathode, or aluminum air having aluminum metal as a cathode. It may be a battery or a zinc-air battery having zinc metal as a cathode.

According to the present embodiment, a renewable energy regeneration method using a power supply unit that is arranged in a floating body that floats on water and that outputs DC power generated using renewable energy, including metal ions. A charging step of charging direct current power supplied from a power supply unit to a storage battery containing an electrolytic solution, an anode, and at least one cathode, and depositing metal ions on the cathode, and separation for separating the cathode from the storage battery after charging A process, a housing process for housing the cathode separated in the separation process in a container, a transportation process for transporting the container housing the cathode from the first point to a second point different from the first point, and the second point And regenerating the battery as a storage battery by installing the cathode taken out of the container in a storage battery container having an anode different from the anode.
Thereby, the cathode separated from the storage battery after charging is accommodated in a container, the container is transported from the first point to a second point different from the first point, and after transportation to the second point, the anode is By regenerating the storage battery by installing the cathode extracted from the container in a storage battery container having a different anode, the storage battery can be restored, and when recovering energy using renewable energy, It can be transported with reduced loss.

According to this embodiment, a regeneration process reproduces | regenerates as a storage battery by inject | pouring into a storage battery container the new electrolyte solution different from the said electrolyte solution.
Thereby, a storage battery can be decompress | restored by reproducing | regenerating as a storage battery by inject | pouring into a storage battery container the new electrolyte solution different from the said electrolyte solution.
Further, according to the present embodiment, the method includes a discharging step of discharging the electrolytic solution from the charged storage battery, and a storing step of storing the electrolytic solution discharged in the discharging step in the electrolytic solution container. The electrolytic solution container in which the electrolytic solution is stored in the process is transported from the first point to the second point, and in the regeneration process, the electrolytic solution stored in the electrolytic solution container is injected into the storage battery container to be regenerated as a storage battery.
Thus, the electrolytic solution discharged from the charged storage battery is stored in the electrolytic solution container, the electrolytic solution container containing the electrolytic solution is transported from the first point to the second point, and is stored in the electrolytic solution container. The storage battery can be restored by regenerating it as a storage battery by injecting the electrolyte solution into the storage battery container.
Furthermore, according to the present embodiment, when power is discharged from the storage battery, the separation step of separating the cathode from the storage battery, the accommodation step of accommodating the cathode separated by the separation step in the container, and the cathode are accommodated. A return step for returning the container from the second point to the first point, and a circulation step for returning the storage battery returned by the return step to the charging step.
Thereby, when electric power is discharged from the storage battery, the cathode separated from the storage battery is accommodated in the container, the container accommodating the cathode is returned from the second point to the first point, and returned by the return process. The cathode can be reused by returning the cathode to the charging step.
Further, according to the present embodiment, when electric power is discharged from the storage battery, a discharging step of discharging the electrolytic solution from the storage battery, and a storing step of storing the electrolytic solution discharged by the discharging step in the electrolytic solution container, A return step of returning the electrolytic solution container containing the electrolytic solution from the second point to the first point in the storage step, and regenerating as a storage battery by injecting the electrolytic solution from the electrolytic solution container returned in the return step into the storage battery .
Thereby, when electric power is discharged from the storage battery, the electrolytic solution discharged from the storage battery is stored in the electrolytic solution container, and the electrolytic solution container in which the electrolytic solution is stored is returned from the second point to the first point, The electrolytic solution can be reused by regenerating as a storage battery by injecting the electrolytic solution from the returned electrolytic solution container into the storage battery.

According to the present embodiment, a renewable energy regeneration method using a power supply unit that is arranged in a floating body that floats on water and that outputs DC power generated using renewable energy, including metal ions. A charging process in which a DC battery supplied from a power supply unit is charged to a storage battery containing a cathode cassette containing an electrolyte, an anode, and a cathode, and metal ions are deposited on the cathode; A separation step of separating the accommodated cathode cassette, a transport step of transporting the cathode cassette accommodating the cathode from the first point to a second point different from the first point, and an anode after the transport to the second point And a regeneration step of regenerating as a storage battery by installing a cathode cassette in a storage battery container having a different anode.
As a result, the cathode cassette containing the cathode is separated from the charged storage battery, the cathode cassette containing the cathode is transported from the first point to a second point different from the first point, to the second point. By regenerating as a storage battery by installing a cathode cassette in a storage battery container having an anode different from the anode after transportation, the storage battery can be restored, and when recovering energy using renewable energy, It can be transported in a state where the loss of the produced power is suppressed.
In addition, when power is discharged from the storage battery, a separation step of separating the cathode cassette containing the cathode from the storage battery, and a return step of returning the cathode cassette containing the cathode from the second point to the first point And a circulation step of returning the cathode cassette containing the cathode returned in the return step to the charging step.
As a result, when power is discharged from the storage battery, the cathode cassette containing the cathode is separated from the storage battery, the cathode cassette containing the cathode is returned from the second point to the first point, and returned. By returning the cathode cassette containing the cathode to the charging step, the cathode cassette containing the cathode can be reused.

<Modification>
As a modification of the present embodiment, there is provided a renewable energy regeneration method using a power supply unit that is arranged in a floating body that floats on water and that outputs DC power generated using renewable energy. A charging step of charging direct current power supplied from a power supply unit to a storage battery containing an electrolytic solution, an anode and a cathode, and depositing metal ions on the cathode, and a discharging step of discharging the electrolytic solution from the charged storage battery A storage step for storing the electrolyte discharged in the discharge process in the container, a storage battery in which the electrolyte solution is discharged in the discharge process, and a container in which the electrolyte solution is stored in the storage process from the first point to the first point. A transport process for transporting to a different second point, and a restoration work for restoring the storage battery to a dischargeable state by injecting the electrolyte contained in the container into the storage battery after transport to the second point. And, it may be provided.
Thereby, the electrolytic solution is stored in the container from the storage battery after charging, and the storage battery from which the electrolytic solution has been discharged and the container in which the electrolytic solution is stored are transported from the first point to the second point, and are stored in the container after the transport. By injecting the electrolyte solution into the storage battery, the storage battery can be restored to a dischargeable state, and when recovering energy using renewable energy, it is transported in a state where the loss of the produced power is suppressed be able to.

According to this embodiment, when the storage battery is restored to a dischargeable state by the restoration process, when the power is discharged from the storage battery, the return process of returning the storage battery from the second point to the first point; A circulation step of returning the storage battery returned by the step to the charging step.
Thereby, when the storage battery is restored to a dischargeable state, when power is discharged from the storage battery, the storage battery is returned from the second point to the first point, and the returned storage battery is charged. Can be reused.

Second Embodiment
Next, a renewable energy transfer regeneration method according to the second embodiment of the present invention will be described.
In the present embodiment, a renewable energy transfer and regeneration method when a lithium air battery is to be charged instead of the storage battery provided in the above-described sail column installation unit 135 will be described.
With reference to the schematic diagrams shown in FIGS. 15A to 15G, the configuration of the lithium-air battery will be described.
FIG. 15A shows a state during charging, and the storage battery 210 includes a first storage chamber R1 and a second storage chamber R2, and a boundary wall 211 between the first storage chamber R1 and the second storage chamber R2. And an opening 212 is provided in part of the boundary wall 211. The first storage chamber R1 stores a negative electrode 215a, a positive electrode 215b, and an electrolyte solution 214. During charging, lithium dissolved in the electrolyte solution 214 in the first storage chamber R1 is deposited as lithium ions on the cathode.
By moving the movable wall 213 to the front surface position of the opening provided in the boundary wall 211, the opening 212 can be covered, and the electrolyte solution 214 between the first storage chamber R1 and the second storage chamber R2 can be covered. The movement can be prevented.
FIG. 15B shows the separation preparation state after charging, and the movable wall 213 is covered with the movable wall 213 by moving the movable wall 213 laterally from the front surface position of the opening 212 provided in the boundary wall 211. Opened portion 212 is opened.
FIG. 15C shows a separated state after charging, that is, a state in which the storage battery 210 is rotated 90 degrees clockwise, and the electrolytic solution 214 is opened from the first storage chamber R1 to the opening 212 in an argon gas atmosphere. Can be dropped and moved to the second storage chamber R2 (the downward direction in the drawing is the gravitational direction).

FIG. 15D shows a state in which charging / discharging is impossible, that is, a state in which the storage battery 210 is rotated 90 degrees counterclockwise, and the electrolytic solution 214 is moved to the second storage chamber R2 to open the opening. The movable wall 213 moves to the front surface position 212, and the electrolyte solution 214 can be prevented from moving between the first storage chamber R1 and the second storage chamber R2. At this time, since the anode and the cathode in the first storage chamber R1 are in an argon gas atmosphere, a stable state is maintained.
FIG. 15E shows transportation of the storage battery 210, and the storage battery 210 is transported from the ocean to Japan by a transport ship.
FIG. 15 (f) shows the restored state of the storage battery 210. By moving the movable wall 213 laterally from the front surface position of the opening 212, the opening 212 covered with the movable wall 213 is brought into the opened state. Become. Furthermore, the state where the storage battery 210 is rotated 90 degrees counterclockwise is shown, and the electrolytic solution 214 passes through the opening 212 from the second storage chamber R2 and drops and moves to the first storage chamber R1 (the downward direction in the drawing). Gravity direction).
FIG. 15G shows the dischargeable state of the storage battery 210. The electrolytic solution 214 is moved to the first storage chamber R1, the movable wall 213 is moved to the front position of the opening 212, and the first storage chamber R1. And the movement of the electrolyte solution 214 between the second storage chamber R2 can be prevented.

With reference to the flowchart shown in FIG. 16, the renewable energy reproduction | regeneration method applied to a lithium air battery is demonstrated.
(1) Offshore factory mother ship The offshore factory mother ship is connected to the converter provided in the connection box 136A of the sail column installation unit 135 and is mounted on the offshore factory mother ship using the power supplied from the storage battery via the converter. The lithium air battery is charged with power. Thereby, lithium dissolved in the electrolytic solution 214 is deposited as lithium ions on the cathode.
Here, when the electric power stored in the storage battery on the used sail column installation unit 135 is exhausted, the offshore factory mother ship moves to the next sail column installation unit 135 and continues the operation.
(2) Separation The lithium-air battery is brought into a non-dischargeable state by separating the cathode on which lithium ions are deposited from the electrolyte in the storage battery.
That is, when charging is completed, the electrolytic solution is discharged from the first housing chamber R1 to the second housing chamber R2 from the first housing chamber R1 to the second housing chamber R2 in an argon gas atmosphere, and is changed to a state in which discharge is impossible. When the movement of the electrolytic solution is completed, the movable wall is moved so as to cover the opening 212 provided in the boundary wall 211. After the separation, it is preferable to inject argon gas into the first storage chamber R1 in order to protect the cathode on which lithium ions are deposited.
(3) Transportation The storage battery in which the anode, cathode and electrolyte are separated is loaded onto a transport ship and transported from the ocean (first point) to Japan (second point) on the transport ship.

(4) Restoration The anode, cathode, and electrolyte of the storage battery 210 transported to Japan (second point) are restored to a dischargeable state.
That is, in an argon gas atmosphere, the electrolytic solution is discharged from the second storage chamber R2 to the first storage chamber R1 through the opening 212 provided in the boundary wall 211, and is changed to a dischargeable state.
The storage battery 210 is assembled as a lithium air battery, and the lithium air battery is shipped.
(5) Discharge Discharge from the lithium air battery to the load side.
(6) Collection Transport from Japan (2nd point) to offshore (1st point) by transport ship.
Return to step (1). By collecting the discharged lithium-air battery, a lithium circulation cycle can be performed.

According to the present embodiment, a renewable energy regeneration method including a power supply unit that is arranged in a floating body floating on water and outputs DC power generated using renewable energy, which includes metal ions. A charging step of charging direct current power supplied from the power supply unit to the storage battery in which the electrolytic solution, the anode, and the cathode are housed in the first storage chamber, and depositing metal ions on the cathode; A discharging step of discharging the electrolyte from one storage chamber, a storage step of storing the electrolyte discharged in the discharging step in a second storage chamber different from the first storage chamber provided in the storage battery, and a storage battery after the storage step The transport process for transporting the battery from the first point to a second point different from the first point, and the electrolyte stored in the second storage chamber of the storage battery in the first storage chamber after transport to the second point by the transport process inject And a restoring step of restoring the storage battery to discharge state by the.
Thereby, after charging, the electrolyte is discharged from the first storage chamber provided in the storage battery, the discharged electrolyte is stored in the second storage chamber provided in the storage battery, and the storage battery is moved from the first point to the second point. After transporting and transporting to the second point, the storage battery can be restored to a dischargeable state by injecting the electrolyte contained in the second storage chamber of the storage battery into the first storage chamber, and using renewable energy And when recovering energy, it can be transported in a state where the loss of the produced power is suppressed.

According to this embodiment, when the storage battery is restored to a dischargeable state by the restoration process, when the power is discharged from the storage battery, the return process of returning the storage battery from the second point to the first point; A circulation step of returning the storage battery returned by the step to the charging step.
Thereby, when the storage battery is restored to a dischargeable state, when power is discharged from the storage battery, the storage battery is returned from the second point to the first point, and the returned storage battery is charged. Can be reused.

<Modification>
As a modification of the present embodiment, there is provided a renewable energy regeneration method using a power supply unit that is arranged in a floating body that floats on water and that outputs DC power generated using renewable energy. A charging step of charging direct current power supplied from a power supply unit to a storage battery containing an electrolytic solution, an anode and a cathode, and depositing metal ions on the cathode, and a discharging step of discharging the electrolytic solution from the charged storage battery A storage step for storing the electrolyte discharged in the discharge process in the container, a storage battery in which the electrolyte solution is discharged in the discharge process, and a container in which the electrolyte solution is stored in the storage process from the first point to the first point. A transport process for transporting to a different second point, and a restoration work for restoring the storage battery to a dischargeable state by injecting the electrolyte contained in the container into the storage battery after transport to the second point. And, it may be provided.
Thereby, the electrolytic solution is stored in the container from the storage battery after charging, and the storage battery from which the electrolytic solution has been discharged and the container in which the electrolytic solution is stored are transported from the first point to the second point, and are stored in the container after the transport. By injecting the electrolyte solution into the storage battery, the storage battery can be restored to a dischargeable state, and when recovering energy using renewable energy, it is transported in a state where the loss of the produced power is suppressed be able to.

<Third Embodiment>
Next, a renewable energy transfer regeneration method according to the third embodiment of the present invention will be described.
In the present embodiment, a renewable energy transfer and regeneration method when a magnesium air battery is to be charged instead of the storage battery provided in the above-described sail column installation unit 135 will be described.
FIG. 17 is a diagram showing a configuration of the magnesium air battery 230. In addition, the structure of the magnesium air battery shown in FIG. 17 is described in Unexamined-Japanese-Patent No. 2012-234799.
As shown in FIG. 17, the battery 230 includes a cathode material 232 made of a magnesium alloy, an anode current collector 236 that supplies electrons to air (oxygen) as an anode material, a cathode material 232, and an anode current collector 236. , A separator 234 disposed between the electrodes, an electrolyte 238 for eluting magnesium ions (Mg 2+ ) generated at the cathode, and an electrolyte bath 240 for storing the electrolyte 238.

The cathode material 232 is made of a magnesium alloy. The magnesium alloy is an alloy containing magnesium (Mg) as a main component, for example, an alloy containing 50% by weight or more of magnesium.
The separator 234 is disposed between the cathode material 232 and the anode current collector 236. The separator 234 has a role of preventing a short circuit between the cathode material 232 and the anode current collector 236 and sucking up the electrolytic solution 238 stored in the electrolytic solution tank 240 and holding the electrolytic solution 238. Yes. As the separator 234, for example, polyethylene fiber, polypropylene fiber, glass fiber, resin nonwoven fabric, glass nonwoven fabric, filter paper, or the like can be used.

The anode current collector 236 has a role of supplying electrons to oxygen in the air as an anode material. The material of the anode current collector 236 is not particularly limited as long as it is a conductive material. For example, a carbonaceous material such as activated carbon, carbon fiber, or carbon felt, or a metal material such as iron or copper is used. Can be used. As the material of the anode current collector 236, it is particularly preferable to use carbon powder from the viewpoint of a large contact area with oxygen in the air and excellent current collection efficiency.
The electrolytic solution 238 has a role of eluting magnesium ions (Mg 2+ ) generated in the cathode material 232 and supplying water (H 2 O) that reacts with oxygen to the anode. As the electrolytic solution 238, an acidic, alkaline, or neutral aqueous solution can be used. For example, at least one selected from the group consisting of a sodium chloride aqueous solution, a sodium hydroxide aqueous solution, a sodium hydrogen carbonate aqueous solution, and a sodium percarbonate aqueous solution can be used.

The shape and material of the electrolytic solution tank 240 are not particularly limited, and any electrolytic solution tank 240 can be used as long as the electrolytic solution 18 can be stored. For example, a container formed of a synthetic resin such as polypropylene can be used as the electrolytic solution tank 240.
A wire made of a conductive material such as copper may be attached to the surface of the anode current collector 236 that is in contact with air. Thereby, the contact area between oxygen and the anode current collector 236 can be increased, and the current collection efficiency at the anode of the battery 230 can be further increased.
Note that FIG. 17 illustrates an example in which the battery 230 is configured by sequentially stacking the cathode material 232, the separator 234, and the anode current collector 236, but the configuration of the battery 230 is as described above. It is not limited to. For example, the battery 230 can be configured by winding the separator 234 and the anode current collector 236 in order around the plate-like cathode material 232.

Here, the reaction of the magnesium-air battery will be described.
As described above, the magnesium-air battery includes a cathode material made of a magnesium alloy containing aluminum and calcium, oxygen in the air is used as an anode active material (a material that receives electrons), and magnesium is used as a cathode active material (which emits electrons). Battery).
The magnesium at the cathode emits electrons and becomes magnesium ions and is eluted into the electrolyte. On the other hand, at the anode, oxygen and water receive electrons and become hydroxide ions. When the battery is viewed as a whole, an electromotive force is generated between the two electrodes as magnesium hydroxide (Mg (OH) 2 ) is generated from magnesium, oxygen, and water. The respective reaction formulas at the anode and the cathode are as follows.

Anode: O 2 + 2H 2 O + 4e → 4OH
Cathode: 2Mg → 2Mg 2+ + 4e
Overall: 2Mg + O 2 + 2H 2 O → 2Mg (OH) 2

With reference to the flowchart shown in FIG. 18, a magnesium air battery is applied and demonstrated to the renewable energy reproduction | regeneration method.
A flow chart in the case of carrying renewable energy converted to magnesium will be described.
(1) Japan In Japan, a user discharges electric power from a magnesium air battery to a load side (for example, a vehicle). Collect the magnesium-air battery that is no longer discharged. Furthermore, the electrode part in which the anode and the cathode are integrated is separated from the magnesium-air battery and accommodated in the container A, and the electrolytic solution sufficiently containing magnesium ions is collected in the container B.
New batteries will be provided to users of magnesium air batteries.
(2) Transport ship Container A containing an electrode part in which an anode and a cathode are integrated and a container B containing an electrolyte solution are transported from Japan to a marine factory mother ship by a transport ship.
Supply container A and container B to the mother ship of the offshore factory.

(3) Offshore factory mother ship The electrode part in which the anode and the cathode are integrated is taken out from the container A and installed in the battery container, and the electrolytic solution is injected from the container B into the battery container.
The marine factory mother ship moves in parallel with the dredger fleet, and charges the magnesium air battery using the power generated by the solar cell of the dredger 101 on the mother ship. As a result, metallic magnesium is deposited on the cathode of the electrode part in which the anode and the cathode are integrated in the magnesium-air battery.
The marine factory mother ship is connected to the converter provided in the junction box 136A of the sail column installation unit 135, and the magnesium air mounted on the marine factory mother ship using the electric power supplied from the storage battery via the converter. Charge the battery with power. When the power stored in the storage battery on the currently used sail column installation unit 135 is exhausted, the offshore factory mother ship moves to the next sail column installation unit 135 and continues the operation.
(4) Manufacture of magnesium in a marine factory mother ship By charging a magnesium air battery carried by a carrier ship, magnesium ions are deposited on the surface of magnesium metal as a cathode.
Next, while injecting argon gas into the magnesium-air battery, the electrode part in which the anode and the cathode are integrated is accommodated in the container A, and the electrolytic solution in the battery container is transferred to the container B and accommodated to discharge the battery container. Makes it impossible. As a result, a container A having an electrode part in which an anode and a cathode are integrated in an argon gas atmosphere, and a container B that stores an electrolytic solution are prepared.

(5) Carrier ship Container A (argon gas atmosphere, no electrolyte solution) having an electrode part integrated with an anode and a cathode manufactured by a marine factory mother ship and a container B containing the electrolyte solution are placed on the carrier ship from the marine factory mother ship. After changing, transport to Japan.
After arriving in Japan, container A (argon gas atmosphere, no electrolyte) and container B are landed.
(6) Japan The electrode part is moved to the battery container from the container A having the electrode part in which the anode and the cathode are integrated, the electrolyte solution is moved from the container B containing the electrolyte solution to the battery container, and assembled as a magnesium-air battery. The argon gas gradually escapes.
Next, when the magnesium air battery is shipped and the magnesium air battery is mounted on the user's vehicle, the power output from the magnesium air battery during operation of the vehicle is used.
Subsequently, it returns to a process (1). By collecting the magnesium-air battery after discharge, a magnesium circulation cycle can be performed.

Here, the properties of the employed metal Li (lithium) and metal Mg (magnesium) in the first to third embodiments will be described.
Metal Li hardly changes in dry air, but when there is moisture, it reacts with nitrogen even at room temperature to produce Li 3 N.
When heated in air, it burns to Li 2 O. For this reason, it is necessary to handle metal Li under an argon atmosphere. The reaction with water is the mildest among alkali metals, but it ignites when large amounts of lithium react with water.
On the other hand, metal Mg is easily combined with oxygen and has a strong reducing property. Surface oxidation occurs when left in the air. Moreover, although it reacts with carbon dioxide, water, and sulfurous acid, all of them become a passive film, so unlike alkali metals and calcium, corrosion does not proceed and it is not necessary to store in mineral oil. When heated in air, it burns with a flame and strong light. For this reason, it is necessary to handle metal Mg under an argon atmosphere.

According to the present embodiment, a renewable energy regeneration method including a power supply unit that is arranged in a floating body floating on water and outputs DC power generated using renewable energy, which includes metal ions. A charging step of charging a direct current power supplied from a power supply unit to a storage battery containing an electrode part integrated with an electrolyte solution, an anode and a cathode, and depositing metal ions on the cathode; and an electrode part from the storage battery after charging A separation step for separating the electrode portion, a housing step for housing the electrode portion separated by the separation step in a container, and a transportation step for transporting the container housing the electrode portion from the first point to a second point different from the first point. And a regeneration step of regenerating as a storage battery by installing an electrode portion taken out from the container in the storage battery container after transportation to the second point.
Thereby, the electrode part in which the anode and the cathode separated from the charged storage battery are integrated is accommodated in a container, and the container is transported from the first point to a second point different from the first point, and the second point. After being transported to the storage battery, the storage battery can be regenerated by installing an electrode unit in which the anode and the cathode taken out from the container are integrated into the storage battery container, so that the storage battery can be restored. Can be transported in a state in which the loss of the produced power is suppressed.

According to this embodiment, a regeneration process reproduces | regenerates as a storage battery by inject | pouring into a storage battery container the new electrolyte solution different from electrolyte solution.
Thereby, a storage battery can be decompress | restored by reproducing | regenerating as a storage battery by inject | pouring a new electrolyte solution different from electrolyte solution into a storage battery container.
Further, according to the present embodiment, the method includes a discharging step of discharging the electrolytic solution from the charged storage battery, and a storing step of storing the electrolytic solution discharged in the discharging step in the electrolytic solution container. The electrolytic solution container in which the electrolytic solution is stored in the process is transported from the first point to the second point, and in the regeneration process, the electrolytic solution stored in the electrolytic solution container is injected into the storage battery container to be regenerated as a storage battery.
Thus, the electrolytic solution discharged from the charged storage battery is stored in the electrolytic solution container, the electrolytic solution container containing the electrolytic solution is transported from the first point to the second point, and is stored in the electrolytic solution container. The storage battery can be restored by regenerating it as a storage battery by injecting the electrolyte solution into the storage battery container.

Furthermore, according to this embodiment, when electric power is discharged from the storage battery, the separation step of separating the electrode portion in which the anode and the cathode are integrated from the storage battery, and the anode and cathode separated by the separation step are integrated. Returned to the container, the return process of returning the container containing the electrode part integrated with the anode and the cathode from the second point to the first point, and the return process. A circulation step of extracting an electrode portion in which the anode and the cathode are integrated from the container and returning the electrode portion to the charging step.
Thereby, when electric power is discharged from the storage battery, the electrode part in which the anode and the cathode separated from the storage battery are integrated is accommodated in the container, and the electrode part in which the anode and the cathode are integrated is accommodated. Is returned from the second point to the first point, and the cathode part can be reused by returning the electrode part in which the anode and the cathode returned by the return process are integrated to the charging process.
Further, according to the present embodiment, when electric power is discharged from the storage battery, a discharging step of discharging the electrolytic solution from the storage battery, and a storing step of storing the electrolytic solution discharged by the discharging step in the electrolytic solution container, A return step of returning the electrolytic solution container containing the electrolytic solution from the second point to the first point in the storage step, and regenerating as a storage battery by injecting the electrolytic solution from the electrolytic solution container returned in the return step into the storage battery .
Thereby, when electric power is discharged from the storage battery, the electrolytic solution discharged from the storage battery is stored in the electrolytic solution container, and the electrolytic solution container in which the electrolytic solution is stored is returned from the second point to the first point, The electrolytic solution can be reused by regenerating as a storage battery by injecting the electrolytic solution from the returned electrolytic solution container into the storage battery.

<Modification>
As a modification of the present embodiment, there is provided a renewable energy regeneration method using a power supply unit that is arranged in a floating body that floats on water and that outputs DC power generated using renewable energy. A charging step of charging direct current power supplied from a power supply unit to a storage battery containing an electrolytic solution, an anode and a cathode, and depositing metal ions on the cathode, and a discharging step of discharging the electrolytic solution from the charged storage battery A storage step for storing the electrolyte discharged in the discharge process in the container, a storage battery in which the electrolyte solution is discharged in the discharge process, and a container in which the electrolyte solution is stored in the storage process from the first point to the first point. A transport process for transporting to a different second point, and a restoration work for restoring the storage battery to a dischargeable state by injecting the electrolyte contained in the container into the storage battery after transport to the second point. And, it may be provided.
Thereby, the electrolytic solution is stored in the container from the storage battery after charging, and the storage battery from which the electrolytic solution has been discharged and the container in which the electrolytic solution is stored are transported from the first point to the second point, and are stored in the container after the transport. By injecting the electrolyte solution into the storage battery, the storage battery can be restored to a dischargeable state, and when recovering energy using renewable energy, it is transported in a state where the loss of the produced power is suppressed be able to.

<Modification>
In 1st Embodiment-3rd Embodiment, although metal Li (lithium) or metal Mg (magnesium) was employ | adopted and demonstrated to the cathode, the following metals can be employ | adopted as a cathode.
The discharge capacity comparison table by the difference of the cathode metal of a metal air battery is shown below.

  As shown in Table 1, the metal-air battery as a storage battery is a lithium-air battery having lithium metal as a cathode, a magnesium-air battery having magnesium metal as a cathode, or a sodium-air battery having sodium metal as a cathode, or Any calcium-air battery having calcium metal as the cathode, aluminum-air battery having aluminum metal as the cathode, or zinc-air battery having zinc metal as the cathode may be used.

<Fourth embodiment>
Next, a renewable energy production method, a power generation method, and a regeneration method according to the fourth embodiment of the present invention will be described.
In the present embodiment, a renewable energy production method, a power generation method, and a regeneration method in the case of producing magnesium by electrolyzing seawater instead of the storage battery provided in the above-described sail column installation unit 135 will be described.
With reference to the flowchart shown in FIG. 19, the manufacturing method and power generation method of magnesium Mg are applied to the regeneration method and described.
The case of carrying by converting into magnesium will be described according to the flowchart.
In the offshore factory mother ship, the offshore factory mother ship moves in parallel with the dredger fleet and produces magnesium using the power generated by the solar cell of the dredger 101 on the mother ship.
The offshore factory mother ship is connected to a converter provided in the junction box 136A of the sail pole installation unit 135, and uses the power supplied from the storage battery via the converter to produce magnesium mounted on the offshore factory mother ship. Supply power to the system. When the power stored in the storage battery on the currently used sail column installation unit 135 is exhausted, the offshore factory mother ship moves to the next sail column installation unit 135 and continues the operation.

(1) Magnesium production on a marine factory mother ship Generally, as in the work of a salt paddy, water is evaporated from seawater and heated in a state where the water content is reduced, and the salt content is taken out as sodium chloride (NaCl).
In addition, the magnesium concentration in seawater is 1.27 g / kg seawater.
Hydrochloric acid (HCl) is added to magnesium oxide (MgO) remaining after removing moisture with a dehydrator to make magnesium chloride.
Further, there is a method as shown in FIG. First, seawater is supplied to the reaction tank 250, and sodium hydroxide (NaOH) and a polymer are added and stirred. The liquid discharged from the reaction tank 250 is supplied to the precipitation tank 251, and the precipitated solid content is sucked by the pump 252 and supplied to the dehydrator 253 to obtain magnesium hydroxide. This magnesium hydroxide is fed to the dissolution tank 254, and hydrochloric acid (HCl) is further added to obtain magnesium chloride.
Magnesium chloride is electrolyzed by the electric power supplied from the converter of the sail column installation unit 135 to obtain magnesium.
In addition, when magnesium oxide produced after burning magnesium in Japan is transported to an offshore factory mother ship, the process of obtaining magnesium oxide from seawater is no longer necessary, and the work from (2) is performed. Become.

Magnesium is processed into flame retardant magnesium.
Here, the flame retardant magnesium described above will be described.
Flame retardant magnesium is an alloy of Mg—Al—Ca. In the flame-retardant magnesium alloy, the ignition temperature is increased by 200 to 300 ° C. by adding calcium to a normal magnesium alloy.
This magnesium alloy has excellent characteristics such as light weight, specific strength, specific rigidity, and recyclability.
Magnesium is the lightest metal in practical use, and has excellent specific strength / specific rigidity, vibration absorption (damping ability), machinability, and recyclability, reducing the weight of various structures and reducing vibration and noise to reduce environmental impact. Application expansion is expected in various fields such as reduction.
Magnesium alloys have very active and flammable properties, but flame retardant magnesium alloys are epoch-making light metal materials that have improved this problem by raising the ignition temperature by 200-300 ° C.

(3) Transport ship Carry the flame-retardant magnesium from the offshore factory mother ship to Japan by transport ship.
The fuel magnesium is unloaded near the Japanese magnesium thermal power plant.
(4) Magnesium thermal power plant in Japan Power is generated at a thermal power plant using magnesium as fuel.
Power generation is highly efficient by combining gas turbine power generation and steam power generation using high-temperature gas.
The burned magnesium remains as ash as magnesium oxide and is recovered.
(5) Carrier ship Magnesium oxide recovered from the power plant is transported from Japan to the mother ship at the offshore factory.
Deliver magnesium oxide to the mother ship at the offshore factory, receive newly produced magnesium, and take it back to Japan.
Magnesium oxide is produced by burning magnesium to form ash, which enables a cycle of magnesium circulation.

A power generation method for magnesium Mg will be described with reference to the schematic diagram shown in FIG.
The outline diagram shown in FIG. 21 is an excerpt from the book “Magnesium Civilization” (p169) by Takashi Yabe and Tetsuya Yamaji.
(1) Hydrogen is generated by reacting powdered metal magnesium with water. When magnesium particles are made finer, the reaction speed is remarkably increased. As the reaction speed increases further, hydrogen begins to burn. Hydrogen also reacts with oxygen and blows out as water (water vapor). The gas turbine 260 is rotated by hydrogen and power is generated by the generator 261.
(2) The high-temperature gas of the gas turbine 260 is sent to the boiler 262 to generate high-temperature steam. Steam discharged from the steam turbine 263 is heat-exchanged with seawater in the condenser 265 and returned to the boiler 262.
(3) By using the gas turbine 260 and the steam turbine 263 in combination, the power generation efficiency can be increased.

According to this embodiment, the power supply unit is arranged in a floating body floating on the water and outputs DC power generated using renewable energy, and seawater using DC power supplied from the power supply unit. And a production unit for producing magnesium from seawater, and a production unit comprising: an evaporation step for evaporating moisture from the contained seawater; and a seawater whose moisture has been reduced by the evaporation step A separation step of separating the salinity by heating, a first generation step of generating anhydrous magnesium chloride by adding chlorine to the magnesium oxide remaining in the separation step, and direct current power supplied from the power supply unit A second production step of electrolyzing anhydrous magnesium chloride to produce magnesium, And a processing step of processing the flame-retardant magnesium by addition of calcium.
As a result, water is evaporated from seawater, salt content is separated by heating seawater with reduced water content, and anhydrous magnesium chloride is produced by adding chlorine to the remaining magnesium oxide, which is supplied from the power supply unit. Magnesium is produced by electrolyzing anhydrous magnesium chloride using electric power, and the flame retardant magnesium can be recovered from seawater by adding calcium to the magnesium and processing it into flame retardant magnesium. Furthermore, flame-retardant magnesium can be transported in a state where the loss of the produced power is suppressed.

According to the present embodiment, it comprises a transport process for transporting the flame-retardant magnesium processed by the processing process to a thermal power plant, and the thermal power plant generates a high-temperature gas using the flame-retardant magnesium as a fuel, And a power generation step of generating power by applying a high temperature gas to the gas turbine.
As a result, high temperature gas can be generated using flame retardant magnesium as fuel, and the gas can be supplied to the gas turbine for power generation.

According to this embodiment, the transport process for transporting the magnesium oxide remaining in the combustion process to the production unit, and the production unit include a circulation process for returning the magnesium oxide transported in the transport process to the first generation process.
Thereby, magnesium oxide can be reused by transporting the magnesium oxide remaining after combustion.

  DESCRIPTION OF SYMBOLS 100 ... Solar power generation system, 101 ... Reed, 110 ... Sail pillar installation unit, 111 ... Sail pillar, 112 ... Material storage place, 113 ... Mobile carriage for repair, 115 ... Inverter, 116 ... Screw, 111 ... Sail, 121 ... Passage, 122 ... Float, 125 ... Wheel, 126 ... Carriage outrigger, 120 ... Crane, 130 ... Cell unit, 132 ... Connection box, 133 ... Sensor, 134 ... Power transmission line, 135 ... Sail pole installation unit, 150 ... Marine factory mother ship, 201 ... Lithium Air battery, 202 ... cathode, 203 ... anode, 204 ... aqueous solution, 201 ... lithium air battery, 201 ... battery container, 211 ... field wall, 212 ... opening, 214 ... electrolyte, 213 ... movable wall, 230 ... magnesium air Batteries, 232 ... cathode material, 236 ... anode current collector, 234 ... separator, 240 ... electrolyte bath, 250 ...応槽, 251 ... sedimentation tank, 252 ... pump, 253 ... dehydrator, 254 ... melting tank, 260 ... gas turbine, 261 ... generator, 262 ... boiler, 263 ... steam turbine, 265 ... condenser

Claims (10)

  1. A renewable energy regeneration method using a power supply unit that is arranged in a floating body floating on water and outputs DC power generated using renewable energy,
    A charging step of charging a storage battery containing a cassette containing an electrolytic solution containing metal ions, an anode, and a cathode with DC power supplied from the power supply unit, and depositing metal ions on the cathode;
    A separation step of separating the cassette containing the cathode from the storage battery after charging;
    Transporting the cassette containing the cathode from a first point to a second point different from the first point;
    And a regeneration step of regenerating the battery as a storage battery by installing the cassette in a storage battery container having an anode different from the anode after the transport to the second point.
  2. A separation step of separating a cassette containing a cathode from the storage battery when electric power is discharged from the storage battery;
    A returning step of returning the cassette containing the cathode from the second point to the first point;
    The regenerative energy transfer / regeneration method according to claim 1, further comprising a circulation step of returning the cassette containing the cathode returned by the return step to the charging step.
  3. A renewable energy regeneration method using a power supply unit that is arranged in a floating body floating on water and outputs DC power generated using renewable energy,
    A charging step of charging a storage battery containing an electrolytic solution containing metal ions, an anode, and at least one cathode with DC power supplied from the power supply unit, and depositing metal ions on the cathode;
    A separation step of separating the cathode from the storage battery after charging;
    An accommodating step of accommodating the cathode separated in the separating step in a container;
    Transporting the container containing the cathode from a first point to a second point different from the first point;
    A regeneration step of regenerating as a storage battery by installing the cathode extracted from the container in a storage battery container having an anode different from the anode after transport to the second point. Transport reproduction method.
  4. A renewable energy regeneration method using a power supply unit that is arranged in a floating body floating on water and outputs DC power generated using renewable energy,
    A charging step of charging a direct-current power supplied from the power supply unit to a storage battery containing an electrode portion in which an electrolytic solution containing metal ions, an anode and a cathode are integrated, and depositing metal ions on the cathode;
    A separation step of separating the electrode part from the storage battery after the charging;
    A housing step of housing the electrode part separated in the separation step in a container;
    A transporting process for transporting the container in which the electrode portion is housed from a first point to a second point different from the first point;
    And a regeneration step of regenerating as a storage battery by installing the electrode part taken out from the container in a storage battery container after transporting to the second point.
  5. The regeneration step includes
    5. The renewable energy transfer and regeneration method according to claim 3, wherein a new electrolytic solution different from the electrolytic solution is regenerated as a storage battery by pouring into the storage battery container.
  6. A discharging step of discharging the electrolyte from the storage battery after charging;
    Containing the electrolytic solution discharged in the discharging step in an electrolytic solution container,
    In the transporting process, the electrolytic solution container in which the electrolytic solution is stored in the storing process is transported from the first point to the second point,
    5. The renewable energy transfer and regeneration method according to claim 3, wherein in the regeneration step, the electrolytic solution contained in the electrolytic solution container is injected into the storage battery container to be regenerated as a storage battery.
  7. A separation step of separating the cathode from the storage battery when power is discharged from the storage battery;
    An accommodating step of accommodating the cathode separated in the separating step in a container;
    A returning step of returning the container containing the cathode from the second point to the first point;
    The regenerative energy transfer regeneration method according to claim 3, further comprising a circulation step of returning the cathode returned by the return step to the charging step.
  8. A separation step of separating an electrode part in which an anode and a cathode are integrated from the storage battery when electric power is discharged from the storage battery;
    An accommodating step of accommodating in the container an electrode part in which the anode and the cathode separated by the separating step are integrated;
    A returning step of returning the container containing the electrode part in which the anode and the cathode are integrated from the second point to the first point;
    5. A recyclable process according to claim 4, further comprising: a circulation step of extracting an electrode portion in which an anode and a cathode are integrated from the container returned by the return step and returning the electrode portion to the charging step. Energy transfer regeneration method.
  9. When power is discharged from the storage battery, a discharging step of discharging the electrolyte from the storage battery;
    An accommodating step of accommodating the electrolytic solution discharged in the discharging step in an electrolytic solution container;
    A returning step of returning the electrolytic solution container in which the electrolytic solution is stored in the storing step from the second point to the first point;
    5. The renewable energy transfer and regeneration method according to claim 3, wherein the battery is regenerated as a storage battery by injecting the electrolyte from the electrolyte container returned in the return step into the storage battery.
  10.   The storage battery is a lithium air battery having lithium metal as the cathode, a magnesium air battery having magnesium metal as the cathode, a sodium air battery having sodium metal as the cathode, or calcium having calcium metal as the cathode. The renewable energy according to any one of claims 1 to 9, wherein the renewable energy is an air battery, an aluminum air battery having aluminum metal as the cathode, or a zinc air battery having zinc metal as the cathode. Transport reproduction method.
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